Model pękania krzepnącego stopu

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Author:
Telejko, Ireneusz
xmlui.dri2xhtml.METS-1.0.item-citation: Annales Universitatis Paedagogicae Cracoviensis. 74, Studia Technica 3 (2010), s. [191]-202
xmlui.dri2xhtml.METS-1.0.item-iso: pl
Subject:
hot tearing
shrinkage brittleness
solidification cracking
mushy state
Date: 2010
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Description:
Dokument cyfrowy wytworzony, opracowany, opublikowany oraz finansowany w ramach programu "Społeczna Odpowiedzialność Nauki" - modułu "Wsparcie dla bibliotek naukowych" przez Ministerstwo Nauki i Szkolnictwa Wyższego w projekcie nr rej. SONB/SP/465103/2020 pt. "Organizacja kolekcji czasopism naukowych w Repozytorium UP wraz z wykonaniem rekordów analitycznych".
Abstract
In general there are at least two zones in the wall cross section of solidifying metal: an external solid layer and an internal zone that contains crystals and liquid phase (mushy zone). Crystal boundaries being in contact with liquid forms a nuclei of cracks. Development of crack consists in separation of crystals along their boundaries. Presence of liquid phase makes energy needed to develop of nuclei lower and process of increasing of crack dimensions quicker. So, brittleness of metal is caused by presence of liquid. Manifestation of brittleness can be described by violent reduction of deformation time to failure. At temperature at which presence of liquid ends in solidifying metal plastic temperature range starts.
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http://hdl.handle.net/11716/10534
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